i am facing this issue with the library

[ngcgolf11]

INFO: [api_routes] Created mixer #1 with details {'pattern': '2', 'width': 640, 'height': 540, 'sources': [{'uid': 'input1', 'width': 60, 'height': 90}]}
WARNING: [ overlay1] Property not boolean: "true"
INFO: [api_routes] Created overlay #1 with details {'type': 'text', 'visible': 'true', 'text': '1', 'source': 'input1', 'font_size': 150}
INFO: [api_routes] Created output #1 with details {'type': 'image', 'width': 640, 'height': 540}
ERROR: [ output1] GStreamer error from sink: gst-resource-error-quark: Error while writing to file "/usr/local/share/brave/output_images/img_17863.jpg". (10)
ERROR: [ output1] GStreamer error debug: gstmultifilesink.c(793): gst_multi_file_sink_write_buffer (): /GstPipeline:pipeline3/GstMultiFileSink:sink:
No such file or directory
ERROR: [ output1] GStreamer error message: Error while writing to file "/usr/local/share/brave/output_images/img_17863.jpg".

[moschopsuk]

It looks like you don't have the directory /usr/local/share/brave/output_images/ on your system.